The Union Reservoir in Longmont, Colorado features a dog training area on the south side of the reservoir where dogs are allowed to roam off leash and swim in designated areas. Dogs must remain leashed in other areas of the park.


BringFido Traveler Rating

Union Reservoir Dog Beach has received a rating of 3.9 out of 5 bones by 12 dog owners on BringFido.

  • More than one year ago.
    Our favorite thing to do together

    Although Cherry Creek dog park is in our back yard, we take Union Reservoir any day!! It is a little over an hour drive for us, but Logan and I love this beach so much we just make a day of it! We pack a cooler and Logan's duck and ball and we are set for the day! The fences are not secure, but if your dog has good recall and loves the water, it really isn't an issue. You can get in (up to your waste) and cool off with them and play with them in the water. We try to do Union Reservoir at least 5 times a summer.

  • More than one year ago.
    great beach, but not secure

    The water is great, and much cleaner then the poop ponds in chatfield. It is a huge reservoir so the water isn't a stagnant bacteria breeding pond. Like mentioned before. There is a dirt road not 10 feet from the fence. I went early afternoon and it was being used quite often. The fence is 3 strands of barbed wire. If your dog does not recall i wouldn't risk it. The sides of the dog area have no fence at all. I took two dogs and one is a beagle mix. She kept trying to wander off to smell. It was very stressful trying to watch my dog that loves water, and my dog that kept wandering off. I won't be taking my beagle back unless i have two pairs of eyes.

  • More than one year ago.
    okay park

    I went to the park in the morning. It was a nice looking beach. There is a dirt road no more then 15 ft from the beach which was being heavily used when I was there. There was a fence that ran between the beach and the road, but it was a four wire type fencing. The sides of the park had no fencing at all, so it's very important your dog will come back to you and not be a wanderer(like my half beagle).

  • More than one year ago.
    Puppy Beach!!!!

    Nice place to take the dogs. I was pretty impressed. Its a nice long stretch of beach that they give the dogs to play on. Is nice because they let you go waist in to play with your dogs. The sand is a little rough on your bare feet after a while. Next time I will be bringing water shoes. It's true that the fence around is not the highest quality but it kept my little ones in, and plus hopefully like my dogs, your dogs are too busy playing in the water to even be up around the fence. I did think the cost was a little much just to spend a couple of hours there. It was $8 not 6 for one vehicle. If you make a day trip it might not be to bad but again a little much if your only gonna stay an hour or two

  • More than one year ago.
    Puppy Beach!!!

    Pretty impressed with the dog beach, its a good long stretch of beach that they give for the dogs to run around. It's true that the fence around it isn't top quality but it keep my small dogs in, plus they were to busy playing in the water to even

  • More than one year ago.
    Small but nice

    We took our three dogs here in February. The beach was only about 12 feet wide at the most, but since many picnic tables were almost in the water, I think the water was high. The road runs along the beach and our dogs could have easily gotten through the fence--we really had to watch them. That being said, our dogs had a blast. They would have given it 5 bones, but the fence brings it down for me.

  • More than one year ago.
    dog beach

    Might not have the greatest fencing but it's the only place I know that let's us bring our four legged babies:)

  • More than one year ago.
    OK dog beach

    First of all, the photo is not of Union Reservoir. That photo is in the mountains. The dog beach is fine if your dog doesn't run off. The road is right next to the dog area with only a wire fence.

  • More than one year ago.
    Very nice dog beach

    Great dog beach, has tables and doggie bags to use. The only problem I had with it was the dirt road was very close by and the fencing was poor- keep an eye on your dogs!

  • More than one year ago.

    that is the wrong number up there the right number is: (303) 772-1265

  • More than one year ago.
    Great place to swim!

    We took our Doberman puppy to Union Reservoir Dog Beach to teach him how to swim. Its the only place near by where we can all get in and swim for only $8. They don't like people being in over their waists but it goes deeper than that and the lifeguards aren't watching the dog area. The dog beach is off to the side of the regular swim beach so you don't have to worry about your dog bothering other non-dog people. My only concern was that the dirt road was really near the beach and only separated by a barb-wire fence. We can't wait to go back!

  • More than one year ago.

    ouR twO LabradOodLEs haD a bLasT!! iT's prETTy smaLL witH aboUT 4 tabLEs sPREad oUT.. watER iS diRty witH haiR bUT thE dOGs LOVE it!! Lots of bUgs: fLies, mOSqUitO's, aND aNts sO briNg sOME OFF!! aLL n' aLL iT's a niCE gETawaY iF yOUR doGS LoVE tHE watER, oR a gOod pLaCe tO taKE yOUR pOoch tO sEE hOW tHEY dO..

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